Automatic private branch exchange telephone system having transfer and night service



March 21, 1950 R. F. STEHLIK 2,501,546

AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER- AND NIGHT SERVICE Filed Sept. 12, 1947 21 Sheets-Sheet l J TO FIG. [7

INVENTOR. RUDOLPHF. STEHLIK ATTORNEY 21 SheetsSheet 2 OPEN ON ROTARY CONTACTS ATE BRANCH EXCHANGE TELEPHONE LINE FINDER 2ss-- 266 259 252 253 254 264* \.\V{

0A 8/ INVENTOR. RUDOLPH F. srsuux ATTORNEY SYSTEM HAVING TRANSFER AND NIGHT SERVICE March 21, 1950 R. F. STEHLIK AUTOMATIC PRIV Filed Sept. 12, 1947 March 21, 1950 R. F. STEHLIK 2,501,546

AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Spt. 12, 1947 21 Sheets-Sheet s 3 SELECTOR 70 OPEN ON H11 ROTARY INVENTOR, RUDOLPH F. STEHUK ATTO RN EY March 21, 1950 R. F. STEHLIK 2,501,546 AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed' Sept. 12, 1947 21 Sheets-Sheet 4 LOCAL CONNECTOR RLS 'RLs SLAVE HOLD 0 462 ROTARY CONTROL BANK INVENTOR. RUDOLPH F. STEHLIK ATTORNEY March 21, 1950 R. F. STEHLIK 2,501,546

. AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Sept. 12, 1947 21 Sheets-Sheet 5 490 L0 GAL CONNECTOR INVENTOR. RUDOLPH F. STE HLIK I ATTORNEY March 21, 1950 R. F. STEHLIK 2,501,546

. AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Sept. 12, 1947 -21 Sheets-Sheet 6 OVEIRFLOW TRUNK SELECTING UNIT- T0 TRUNK EQUIPMENT SIMILAR TO F|ss.|o,n,|2

INVENTOR. RUDOLPH F. STE HLIK ATTORNEY March 21, 1950 R. F. STEHLIK 2,501,546

AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Flled Sept 12, 1947 21 Sheets-Sheet 7 E E N A m S U 8 0 l AA 6 T L I I I n I.

0 T n 7 A T G s F 6 m w 7 Em I. L 2 c l A I l 7 mi COMMON EQUIPMENT FIG. I?

F IG:22

FIGI FIG.2IF|G.3 FIG.4 FIG.5 FIG.6

FIG. FlG l2 FIGJB FIG. [9

FIG. l3 F1614 FIGIS FIG. l6

INVENTOR, RUDOLPH F. STEHLIK ATTORNEY March 21, 1950 R. F. STEHLIK 2,501,546

. AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Sept. 12, 1947 v 21 Sheets-Sheet 8 DISTRIBUTOR INVENTOR'. RUDOLPH F. STEHLIK ATTORNEY March 1950 R. F. STEHLIK 2,501,546

AUTOMATIC PRIVATE, BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Sept. 12, 1947 21 Sheets+Sheet 9 IN VEN TOR. RUDOLPH F. STEHLIK ATTORNEY R. F. STEHLIK SYSTEM HAVING TRA '21 Sheets-Sheet 10 Filed Sept. 12, 1947 2 w f T8... 1 w um 9 Z w M- m x 6 .n 8 a 0 0 w 00 H H 2 o o o m a 1| 1 Em m m m m I A O B 2 .L: n i. E 6 :70 w w 9 4 V I O 6 wm m m 1| llllll- H I, N N w 5 M W O m D Q w lwl E-VQI II I .lI-IIII I R 2 M 8 Hi 7 C Lu 6 4 B 4 o P D j if} W o 2 S l m F 2 vlllll 2 0 w m m P I l h A K F O I U I R T I I I I l I I l I II F 2 7. O 4 H 3 m. 3 4 O 3 8 7 7 m w m m m m m m I \IP 07L W t. MID wolf w 0 o a 000. 0 00 0 0 fi o o M 4. r a mom7 A m? 4 .3 mm -02 A..0K. 6m. OR H con BY [7 ATTORNEY March 21, 1950 s K 2,501,546

AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Sept. 12, 1947 21 Sheets-Sheet ll TRUNK REP. C6

F I INVENTOR.

RUDOL H F. STEH LIK ATTORNEY March 21, 1950 R. F. STEHLIK 2,501,546

AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Sept. 12, 1947 21 Sheets-Sheet 12 TRUNK REP.

.GRD. REMOVED WHEN FIG. 20

IS USED v 294 I696-- 296 I29 292 ATTO RNEY R. F. STEHLIK ATE March 21, 1950 AUTOMATIC PRIV BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Flled Sept 12, 1947 21 Sheets-Sheet 13 mohumjum 0250 05 INVENTOR. RUDOLPH F. STEHLIK I ATTORPCY NSFER AND NIGHT SERVICE l I447\I\ VERT INVENTOR- RUD'OLPH F. STEHLIK 4% 04 ATTORNEY March 21, 1950 R. F. STEHLIK 2,501,546

AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRA Filed Sept. 12, 1947 1 CA. 4 I 48M moomms CONNECTOR GRD. PULSE EACH 2:0 SEC TO INT 1460 900 000 600 000 O00 000 00 one 000 00 March 21, 1950 R. F. STEH LIK 2,501,546 AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Sept. 12, 1947 21 Sheets-Sheet 15 I ma -cAa 48M moomme CONNECTOR c|3 I561, I590 I485 -I I C|4 IZOLPM i TICK BUSY v. o. N. INVENTOR.

RUDOLPH F. STEHLIK ATTORNEY March 21, 1950 R. F. STEHLIK 2,501,546

AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Sept. 12, 1947 21 Sheets-Sheet l6 ANS.

OUP

TRKS.

LAST

TO OTHER TRANSFER OPERATOR ATTENDANTS POSITION I670 A NIGHT SERVICE FIG. l6

- INVENTOR. RUDOLPH F. STEHLIK ATTORNEY March 21, 1950 R. F. STEHLIK 2,501,546

AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Sept. 12, 1947 21 Sheets-Sheet 17 NIGHT SERVICE I INVENTOR. RUDOLPH F STEHLIK,

ATTORNEY March 21, 1950 R sTEHLlK 7 2,501,546

AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Flled Sept 12, 1947 21 Sheets-Sheet l8 mem' SERVIGEJI 2 7 I 0 m o w s w w I m f m m "4. R 6 7 N 1 I B 4| I\ E 6 I 1% 4. M R E mw I D N I F 6 K 4 N B U I R T m I II B m 5 9 m INVENTOR. RUDOIJ H F. STEHLIK ATTORNEY March 21, 1950 RF. STEHLIK 2,501,546

AUTOMATIC PRIVATE BRANCH EXCHANGE TELEPHONE SYSTEM HAVING TRANSFER AND NIGHT SERVICE Filed Sept. 12, 1947 21 Sheets-Sheet 19 FIG. l9

NIGHT SERVICE 1' ANS TO 0TH E R TRK. FINDER TRK. FINDE NIGHT OPER.

TEL.

I889 LOCAL CALL TRK CALL L BELL 9e2 INVENTOR. RUDOLPH F. ST EHLIK ATTORNEY March 21, 1950 Filed Sept 12, 1947 TO OTHER\ R. F. STE AUTOMATIC PRIVATE BRANCH EX SYSTEM HAVING TRANSFER AND NIGHT SERVICE HLIK CHANGE TELEPHONE 21 Sheets-Sheet 20 BY i BY 'RLs RLs TO 52 +I E 5 OTHER zo'rz TRUNKS #2053 10 OTHER OF THIS T AL TRUNKS GROUP L\2o73 OF THIS F 1" GROUP j I 5 0 NIGHT SERVICE :11

zen L un x1; I 1 2046 Zola :2022 I 204s 2o0e TlM.B

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BELL BELL s BELL -M INVENTOR.

RUDOLPH F. STEHLIK ATTORNEY 

